CN-121974526-A - Fluidized bed hardness removal reactor and water treatment method thereof

CN121974526ACN 121974526 ACN121974526 ACN 121974526ACN-121974526-A

Abstract

The invention relates to the technical field of fluidized bed hardness removal reactors, and discloses a fluidized bed hardness removal reactor and a water treatment method thereof, wherein the fluidized bed hardness removal reactor comprises a mixing chamber assembly, and a fluidized bed reaction chamber assembly is arranged on the upper side of the mixing chamber assembly; the mixing chamber assembly comprises a mixing chamber cavity and a water inlet component connected to the side edge of the mixing chamber cavity, the mixing chamber cavity is connected with a crystallization carrier discharge port, the mixing chamber cavity comprises a mixing chamber shell and a rotational flow mixing cavity formed in the mixing chamber shell, the water inlet component comprises a water inlet valve seat and a water inlet valve core arranged in the water inlet valve seat, the water inlet valve seat comprises a valve seat pipe and a thread seat arranged on the valve seat pipe, the water inlet valve core comprises a valve core main body and a valve core water inlet formed in one end of the valve core main body, and the problems of low processing load, large occupied area, complex equipment matching, high operation energy consumption and maintenance cost and insufficient stability of the hard removing effect in the existing water processing hard removing process are solved.

Inventors

WANG HONGCHAO
WANG DANHU
LI KUI
SONG YIRONG
LI YUANZHI
WANG CHUANSHAN
Song tianyuan

Assignees

太通建设有限公司

Dates

Publication Date: 20260505
Application Date: 20260319

Claims (10)

1. The fluidized bed hardness removal reactor is characterized by comprising a mixing chamber assembly (10), wherein a fluidized bed reaction chamber assembly (20) is arranged on the upper side of the mixing chamber assembly (10), and a solid-liquid separation chamber assembly (30) is arranged on the upper side of the fluidized bed reaction chamber assembly (20); The mixing chamber assembly (10) comprises a mixing chamber cavity (11) and a water inlet component (12) connected to the side edge of the mixing chamber cavity (11), a medicament adding port (13) is formed in the upper side of the water inlet component (12), a crystallization carrier discharging port (14) is connected to the mixing chamber cavity (11), and an emptying port (15) is connected to the lower end of the mixing chamber cavity (11); the mixing chamber cavity (11) comprises a mixing chamber shell (111) and a rotational flow mixing cavity (112) formed in the mixing chamber shell (111), rotational flow guide sheets (113) are arranged on the inner wall of the rotational flow mixing cavity (112), and a water outlet (114) is formed in the lower end of the mixing chamber shell (111); The water inlet assembly (12) comprises a water inlet valve seat (121) and a water inlet valve core (122) arranged in the water inlet valve seat (121), and a valve core adjusting sleeve (123) is arranged on the outer side of the water inlet valve seat (121); The water inlet valve seat (121) comprises a valve seat pipe (1211) and a thread seat (1212) arranged on the valve seat pipe (1211), and a valve core limit chute (1213) is formed in the valve seat pipe (1211); The water inlet valve core (122) comprises a valve core main body (1221) and a valve core water inlet (1222) formed in one end of the valve core main body (1221), a tangential water outlet (1223) is formed in the other end of the valve core main body (1221), a limit sliding block (1224) is connected to the outer side of the valve core main body (1221), and a reset spring (1225) is connected to the limit sliding block (1224).
2. The fluidized bed hardness removal reactor according to claim 1, wherein the fluidized bed reaction chamber assembly (20) comprises a crystal nucleus feeding port (21) connected to one side of the fluidized bed reaction chamber assembly (20), and a mixing chamber assembly (10) and a solid-liquid separation chamber assembly (30) are fixedly connected to the upper end and the lower end of the fluidized bed reaction chamber assembly (20) respectively, and are mutually communicated.
3. Fluidized bed hardness removal reactor according to claim 1, wherein the solid-liquid separation chamber assembly (30) comprises a separation chamber housing (31) and a chute precipitation assembly (32) mounted inside the separation chamber housing (31), a communication port (33) is formed in the separation chamber housing (31), a water collecting tank (34) is arranged outside the communication port (33), and a water outlet (35) is connected to the water collecting tank (34).
4. The fluidized-bed hardness removal reactor according to claim 1, wherein the spool body (1221) is slidably disposed inside the valve seat tube (1211), and movement of the spool body (1221) is limited by sliding of the limit slider (1224) in the spool limit runner (1213).
5. The fluidized bed hardness removal reactor according to claim 1, wherein the valve core adjusting sleeve (123) is screwed on the screw seat (1212), and pushes the limit slider (1224) through movement of the screw seat (1212) to drive the valve core main body (1221) to move.
6. A fluidized bed hardness removal reactor according to claim 3, wherein the communication ports (33) are uniformly provided on the separation chamber housing (31) and communicate the inside of the separation chamber housing (31) with the water collecting tank (34).
7. The water treatment method of the fluidized bed hardness removal reactor is characterized in that the reactor is sequentially communicated with a mixing chamber assembly (10), a fluidized bed reaction chamber assembly (20) and a solid-liquid separation chamber assembly (30) from bottom to top, and comprises the following steps: s1, water inflow mixing, namely injecting raw water to be treated into a mixing chamber assembly (10) from the bottom of a reactor, and synchronously adding a hard removing agent into the mixing chamber assembly (10) to fully mix the raw water and the hard removing agent in the mixing chamber assembly (10) to obtain a reaction mixed solution; S2, fluidization crystallization reaction, namely feeding the reaction mixed solution obtained in the step S1 into a fluidized bed reaction chamber assembly (20) from bottom to top, wherein crystallization crystal nuclei are pre-added into the fluidized bed reaction chamber assembly (20), the crystallization crystal nuclei are in a fluidization suspension state by upward flow of the reaction mixed solution, and hardness ions in water and indissolvable sediments generated by reaction of a hardness removing medicament are crystallized and grown on the surfaces of the crystallization crystal nuclei to finish removal of the hardness ions in water; S3, solid-liquid separation and water outlet, namely, enabling the water flow treated in the step S2 to enter a solid-liquid separation chamber assembly (30) from bottom to top, removing suspended matters remained in the water through an inclined tube precipitation assembly (32) in the solid-liquid separation chamber assembly (30), and discharging clarified treated water out of the reactor through a water outlet collecting system; and S4, updating the crystallization carriers, namely, periodically discharging the crystallization carriers with the exceeding particle size in the fluidized bed reaction chamber assembly (20) along with the accumulation of crystals on the surface of the crystallization crystal nucleus, and synchronously supplementing new crystallization crystal nuclei into the fluidized bed reaction chamber assembly (20) to maintain the fluidization state and the hardness removal efficiency of the fluidized bed reaction chamber assembly (20).
8. The method for treating water in a fluidized bed hardness removal reactor according to claim 7, wherein in step S1, the hardness removal agent is at least one selected from lime, sodium hydroxide, and sodium carbonate.
9. The method for treating water in a fluidized bed hardness removal reactor according to claim 7, wherein in the step S2, the crystallization nuclei are sand grains having an effective grain size of 0.2 to 0.4 mm.
10. The method for water treatment in a fluidized bed hardness removal reactor according to claim 7, wherein in step S3, an ascending flow rate of the water flow in the solid-liquid separation chamber assembly (30) is controlled to be 30 to 90m/h.

Description

Fluidized bed hardness removal reactor and water treatment method thereof Technical Field The invention relates to the technical field of fluidized bed hardness removal reactors, in particular to a fluidized bed hardness removal reactor and a water treatment method thereof. Background The hardness in water mainly refers to the total concentration of calcium ions (Ca 2+) and magnesium ions (Mg 2+) in water, and is one of the core water quality control indexes in the tap water supply treatment and industrial wastewater treatment processes. The water hardness is too high, carbonate scale is easily formed on the surfaces of facilities such as water pipelines, heat exchange equipment, membrane treatment units and the like, so that the heat exchange efficiency is reduced, the water transmission energy consumption is increased, the equipment flow passage is blocked and corroded to be damaged, the service life of the equipment is greatly shortened, and the long-term stable operation of the water treatment system is seriously influenced, so that the efficient and stable hard removal treatment is a vital process unit in a water treatment link. At present, the commonly used hard removing process in the water treatment field mainly comprises an ion exchange method, a membrane separation method, a chemical precipitation method, a hard removing filter process and the like. The ion exchange method is the most widely applied traditional softening process, and the hardness is removed by the exchange reaction of sodium ions in sodium cation exchange resin and calcium and magnesium ions in water, so that the technology is mature, the treatment efficiency is high, the hardness of the discharged water can be close to 0, a large amount of salt and clear water are consumed in the operation process to regenerate the resin, high-salt regeneration wastewater can be generated, the operation cost is increased, the risk of secondary pollution is also caused, and the sodium ion content of the treated discharged water is increased, so that the water quality requirement of partial scenes can not be met. The membrane separation method mainly relies on reverse osmosis and nanofiltration semipermeable membranes, realizes separation of water molecules and impurities such as calcium ions and magnesium ions through high-pressure driving, can synchronously realize deep hardness removal and multi-pollutant purification, does not need chemical regeneration, has high degree of automation, but has the problems of large equipment investment, high running power consumption and low concentrated water recovery rate, is only suitable for water treatment scenes with small water quantity and high standard, and is difficult to popularize in large-scale in the large-water-quantity hardness removal engineering. The chemical precipitation method is to add chemical agents such as lime, sodium hydroxide, sodium carbonate and the like into hard water, so that calcium ions and magnesium ions are converted into insoluble precipitates and removed through precipitation and filtration, and the method is suitable for water treatment scenes with high hardness and large water quantity, and the treatment cost is relatively low. The hardness removal filter tank is a common hardness removal process of coupling chemical precipitation and filtration, and is also one of the most widely applied technologies in the current large-water-quantity hardness removal engineering. The process firstly adds lime or sodium hydroxide and other agents into the water inlet end to convert calcium and magnesium ions in water into water-insoluble sediment, and then the sediment is trapped by the filter material layer of the filter tank, thus obtaining purified water. In the actual operation process, the technology has the obvious technical defects that firstly, the treatment load of a filter tank is low, the rising flow rate of water to be treated is only 5-10 m/h, the filter tank area needs to be greatly increased to meet the water treatment demand, the occupied area is large, the civil engineering investment cost is high, secondly, a filter material layer is easy to be blocked by sediment in the operation process of the filter tank, a back flushing program needs to be started when the operation resistance reaches a threshold value, and the technology is not only matched with equipment such as a high-power back flushing pump and a blower, but also high power consumption is generated, the long-term operation cost is increased, thirdly, the sediment trapped by the filter material layer is easy to be hardened and penetrated, the hardness removal effect is fluctuated, and the stability of the water quality of the water is difficult to reach the standard stably for a long term. Based on a plurality of defects existing in the existing hardness removal process, a fluidized bed hardness removal reactor with high treatment load, small occupied area, low energy consumption, simple operation and maintenan