CN203741063U - Environment-friendly and clean solid polyaluminum chloride reactor - Google Patents
Environment-friendly and clean solid polyaluminum chloride reactor Download PDFInfo
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- CN203741063U CN203741063U CN201320887015.5U CN201320887015U CN203741063U CN 203741063 U CN203741063 U CN 203741063U CN 201320887015 U CN201320887015 U CN 201320887015U CN 203741063 U CN203741063 U CN 203741063U
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Abstract
The utility model discloses an environment-friendly and clean solid polyaluminum chloride reactor. The solid polyaluminum chloride reactor comprises a one-step reaction system, a two-step reaction system, a drum drying systems, a residue treatment system and an exhaust absorption system, wherein the one-step reaction system comprises a reaction tank, a reaction transfer tank, a flocculant preparation tank I, a primary press filter and one-step liquid tank, the two-step reaction system comprises a homogenizing tank, a homogenizing transfer tank, a cooling tower, a separation tank, a separated residue storage tank, a flocculant preparation tank II and a semi-product tank, the drum drying system comprises a drying fluid high-level tank, a drying drum and a finished product belt conveyor, the residue treatment system comprises a residue washing tank, a residue press filter, a residue dryer and a waste water tank, and the exhaust absorption system comprises an exhaust absorption tower and a gas-collection hoop arranged above the main press filter. According to the solid polyaluminum chloride reactor disclosed by the utility model, by coagulation and sedimentation, insoluble materials generated in the production are separated and the residue, waste water and waste gas generated during the production process are treated and utilized.
Description
Technical field
The utility model belongs to poly aluminium chloride production technical field, relates to a kind of solid poly aluminium chloride reaction unit of environment-protecting clean.
Background technology
Poly aluminium chloride, is commonly called as water purification agent, has another name called polymerize aluminum chloride, is called for short poly-aluminium, english name PAC; It is the cationic inorganic polymer flocculant of a kind of poly-hydroxy, multinuclear complexing body, and solid phase prod outward appearance is sorrel, yellow or white solid powder, and its chemical molecular formula is [AL
2(OH)
ncL
6-n]
m(in formula, 1≤n≤5, m≤10), wherein m represents extent of polymerization, and n represents the neutral degree of PAC product, soluble in water, there is stronger bridge formation adsorptivity, in hydrolytic process, follow the physicsization such as electrochemistry, cohesion, absorption and precipitation to change, the final [AL that generates
2(OH)
3(OH)
3], thereby reach purification object.
The fundamental difference of poly aluminium chloride and traditional inorganic coagulant is that traditional inorganic coagulant is low molecular crystal salt, and the structure of poly aluminium chloride is made up of the changeable polynary carboxyl complex compound of form, flocculation sediment speed is fast, be suitable for pH value wide ranges, to pipe-line equipment non-corrosiveness, purifying water effect is obvious, can effectively prop up the heavy metal ion such as middle chromaticness SS, COD, BOD and arsenic, mercury that dewater, and this product is widely used in tap water, process water and sewage treatment area.
Poly aluminium chloride is divided into form and is divided into two kinds: a. liquid poly aluminium chloride is undried form, have and need not dilute, load and unload advantage easy to use, price is relatively cheap, shortcoming is traffic requirements tank car, and unit cost increases (solid per ton is equivalent to 2-3 ton liquid); B. solid poly aluminium chloride is dried form, has the advantage of convenient transportation, while not needing tank car, shortcoming to be use, also needs dilution, increases working strength.
The raw material of producing poly aluminium chloride mainly contains two large classes: a class is aluminum-containing mineral, comprises bauxite (gibbsite, boehmite, diaspore), clay, kaolin, alunite etc.; Another kind of is other aluminum-containing raw material, comprises metallic aluminium, aluminium scrap bits, grey aluminium, aluminium hydroxide, aluminum chloride, coal gangue, flyash etc.The method of producing at present poly aluminium chloride mainly contains metallic aluminium (comprising aluminium ash, lead skim) method, active aluminium hydroxide method, aluminium sesquioxide (comprising bauxitic clay, coal gangue etc.) method, crystal aluminum chloride method etc.
1. metallic aluminium method: adopt the raw material of the synthetic poly aluminium chloride of metallic aluminium method to be mainly the tankage that aluminium is processed, as aluminium bits, aluminium ash and aluminium slag etc.Under agitation slowly add according to a certain ratio hydrochloric acid to react by aluminium ash, make liquid aluminium polychloride through slaking polymerization, sedimentation, then through dilute filtration, concentrated, dry making.In technique, can be divided into 3 kinds of acid systems, alkaline process, neutralisation.Acid system is mainly that quality product is wayward with HCl; Alkaline process producting process difficulty is higher, and facility investment is large and alkali charge is large, and pH controls and takes raw material, and cost is higher; With maximum be neutralisation, as long as control proportioning well, generally can be up to state standards.
2. aluminium hydroxide method
The toxic substance content such as aluminium hydrate powder purity is higher, synthetic poly aluminium chloride heavy metal are low, generally adopt the acid-soluble production technique of heating and pressurizing.This technique is fairly simple, but the basicity of polymerize aluminum chloride of producing is lower, and therefore generally adopting aluminium hydroxide to heat, pressurization is acid-soluble adds in calcium aluminate breeze and two procedures.
3. aluminium sesquioxide method
Raw material containing aluminium sesquioxide mainly contains gibbsite, aluminium vanadine, kaolin, coal gangue etc.This production technique can be divided into two steps: the first step is to obtain crystal aluminum chloride, and second step is to obtain poly aluminium chloride by pyrolysis method or neutralisation.
4. aluminium chloride process
Adopting chlorination aluminium powder is Raw material processing poly aluminium chloride, and this method application is the most general.Available crystal aluminum chloride, in 170 DEG C of pyrolysis of seething with excitement, adds water cure polymerization, then through solidifying, dry making.
At present built solid poly aluminium chloride reaction unit, majority be that bauxitic clay and calcium aluminate two-step approach are produced liquid poly aluminium chloride, then liquid poly aluminium chloride is dried with spraying or roller drying is the device of solid poly aluminium chloride.The following shortcoming of existing solid poly aluminium chloride reaction unit ubiquity:
1) in the acid-soluble reaction of the first step and second step polyreaction, all can produce a large amount of insolubless and be difficult to separate with reaction solution, cause insolubles severe overweight in final solid poly aluminium chloride product;
2) roller drying system using, flow setting is reasonable not, causes energy consumption for drying high cost, and the transportation processing of the solid poly aluminium chloride of process roller drying also relatively wastes time and energy;
3) do not have to deal carefully with for the processing of filter residue and comprehensive utilization, waste water with containing problems such as the processing of sour waste gas and comprehensive utilization and energy-saving and cost-reducing, environment-protecting clean productions.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of solid poly aluminium chloride reaction unit of environment-protecting clean, the effectively insolubles content in control and reduction reaction solution, improve output and the quality of final solid poly aluminium chloride product, and to comprehensive treating process and recyclings such as the various filter residues that produce in production process, waste water, waste gas, make the production of solid poly aluminium chloride energy-saving and cost-reducing, environment-protecting clean.
For achieving the above object, the utility model provides following technical scheme:
The solid poly aluminium chloride reaction unit of environment-protecting clean of the present utility model, comprises single step reaction system, two step reactive systems, roller drying system, slag treatment system and tail gas absorbing system;
Described single step reaction system comprises reaction tank, reaction tank transfer pond, flocculating agent formulation tank I, main pressure filter and a step liquid pool, described reaction tank is provided with bauxitic clay charging opening and acid solution charging opening, reaction tank is communicated with reaction tank transfer pond, flocculating agent formulation tank I is communicated with reaction tank transfer pond, reaction tank transfer pond is communicated with the entrance of main pressure filter by the muddy material pump of a step liquid, and the liquid exit of main pressure filter is communicated with a step liquid pool;
Described two step reactive systems comprise modified pond, modified Chi Zhongzhuanchi, cooling tower, separate tank, separate slag saving pond, flocculating agent formulation tank II and work in-process pond, a described step liquid pool is communicated with modified pond by a step liquid transferpump, described modified pond is provided with calcium aluminate charging opening, modified pond is communicated with modified Chi Zhongzhuanchi, modified Chi Zhongzhuanchi is communicated with the entrance of cooling tower by modified liquid transferpump, the outlet of cooling tower is communicated with separate tank, flocculating agent formulation tank II is communicated with separate tank, the top of separate tank is communicated with work in-process pond, the bottom of separate tank with separate slag saving pond be communicated with, separating slag saving pond is communicated with reaction tank by separating slag transferpump,
Described roller drying system comprises dry liquid high level tank, drying drum and finished belt transfer roller, described work in-process pond is communicated with dry liquid high level tank by work in-process liquid pump, dry liquid high level tank is communicated with the dry liquid entrance of drying drum, and the solid outlet of drying drum is just to finished belt transfer roller;
Described slag treatment system comprises slag wash trough, slag pressure filter, slag dryer and wastewater disposal basin, the filter-press residues outlet of described main pressure filter is communicated with slag wash trough, described slag wash trough is communicated with the entrance of slag pressure filter by washed-residue transferpump, the filter-press residues outlet of slag pressure filter is communicated with slag dryer, the liquid exit of slag pressure filter is communicated with wastewater disposal basin, and wastewater disposal basin is communicated with reaction tank and modified pond respectively by waste water pump;
Described tail gas absorbing system comprises tail gas absorber and is arranged on the gas skirt of main pressure filter top, the exhaust gas entrance of described tail gas absorber is communicated with the exhaust steam passage at reaction tank, reaction tank transfer pond, modified pond and gas skirt top respectively, the absorption liquid entrance of described tail gas absorber is communicated with tap water pipe network, and the absorption liquid outlet of tail gas absorber is communicated with wastewater disposal basin.
Further, described reaction tank, reaction tank transfer pond and flocculating agent formulation tank I are equipped with agitator, the quantity of the muddy material pump of a described step liquid is two and parallel with one another, and the quantity of described main pressure filter is three and parallel with one another, and the quantity of a described step liquid pool is four and parallel with one another.
Further, described modified pond, separate tank, separation slag saving pond and flocculating agent formulation tank II are equipped with agitator, and described cooling tower is the cooling tower that is provided with induced draft fan.
Further, the quantity of described drying drum is 20 and parallel with one another, and described drying drum is provided with high-altitude vapor discharge channel, and the quantity of described work in-process liquid pump is two and parallel with one another.
Further, the filter-press residues outlet of described main pressure filter is communicated with slag wash trough by rotary conveyor, the filter-press residues outlet of described slag pressure filter is communicated with slag dryer by rotary conveyor, described slag wash trough is provided with agitator, the quantity of described slag pressure filter is two and parallel with one another, and described wastewater disposal basin is communicated with tap water pipe network.
The beneficial effects of the utility model are:
1) the utility model arranges the devices such as flocculating agent formulation tank, pressure filter and separate tank in single step reaction system and two step reactive systems, by the insolubles producing in coagulating sedimentation separation of produced, improve output and the quality of final solid poly aluminium chloride product;
2) the utility model is provided with dry liquid high level tank, first by dry the suction of liquid poly aluminium chloride liquid high level tank, carrying out high temperature dehydration by dry liquid high level tank distribution feed liquid to each drying drum is dried, thereby the object that has reached uniform distribution with succinct technical process efficiently, has reduced energy consumption for drying cost;
3) the utility model is also provided with the finished belt transfer roller matching with drying drum, automatically collects conveying solid substance poly aluminium chloride by finished belt transfer roller, has saved the cost that transports of solid poly aluminium chloride;
4) slag treatment system and tail gas absorbing system are set the filter residue producing in production process, waste water and waste gas are processed and fully utilized, saved the production means, reduced discharge, reached the object that environment-protecting clean is produced.
Brief description of the drawings
In order to make the purpose of this utility model, technical scheme and beneficial effect clearer, the utility model provides following accompanying drawing to describe:
Fig. 1 is the structural representation of single step reaction system;
Fig. 2 is the structural representation of two step reactive systems;
Fig. 3 is the structural representation of roller drying system;
Fig. 4 is the structural representation of slag treatment system;
Fig. 5 is the structural representation of tail gas absorbing system.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
The solid poly aluminium chloride reaction unit of environment-protecting clean of the present utility model, comprises single step reaction system, two step reactive systems, roller drying system, slag treatment system and tail gas absorbing system.
Fig. 1 is the structural representation of single step reaction system, as shown in the figure, single step reaction system comprises reaction tank 11, reaction tank transfer pond 12, flocculating agent formulation tank I 13, main pressure filter 14 and a step liquid pool 15, described reaction tank 11 is provided with bauxitic clay charging opening and acid solution charging opening, reaction tank 11 is communicated with reaction tank transfer pond 12, flocculating agent formulation tank I 13 is communicated with reaction tank transfer pond 12, reaction tank transfer pond 12 is communicated with the entrance of main pressure filter 14 by the muddy material pump 16 of a step liquid, and the liquid exit of main pressure filter 14 is communicated with a step liquid pool 15; Described reaction tank 11, reaction tank transfer pond 12 and flocculating agent formulation tank I 13 are equipped with agitator, the quantity of the muddy material pump 16 of a described step liquid is two and parallel with one another, the quantity of described main pressure filter 14 is three and parallel with one another, and the quantity of a described step liquid pool 15 is four and parallel with one another.In reaction tank 11, add hydrochloric acid and processing wastewater, then drop into the bauxitic clay of formula ratio, reacting by heating, reaction product is taked to put into reaction tank transfer pond 12 from stream mode, add poly-propionic acid amide flocculation agent flocculation by flocculating agent formulation tank I 13, then pump in main pressure filter 14 by the muddy material pump 16 of a step liquid, reaction tank product is carried out to the separation of slag liquid, an isolated step liquid pump enters in a step liquid pool 15, and the slag wash trough that removes slag carries out subsequent disposal.
Fig. 2 is the structural representation of two step reactive systems, as shown in the figure, two step reactive systems comprise modified pond 21, transfer pond, modified pond 22, cooling tower 23, separate tank 24, separate slag saving pond 25, flocculating agent formulation tank II 26 and work in-process pond 27, a described step liquid pool 15 is communicated with modified pond 21 by a step liquid transferpump 28, described modified pond 21 is provided with calcium aluminate charging opening, modified pond 21 is communicated with transfer pond, modified pond 22, transfer pond, modified pond 22 is communicated with the entrance of cooling tower 23 by modified liquid transferpump 29, the outlet of cooling tower 23 is communicated with separate tank 24, flocculating agent formulation tank II 26 is communicated with separate tank 24, the top of separate tank 24 is communicated with work in-process pond 27, the bottom of separate tank 24 with separate slag saving pond 25 and be communicated with, separating slag saving pond 25 is communicated with reaction tank 11 by separating slag transferpump 20, described modified pond 21, separate tank 24, separation slag saving pond 25 and flocculating agent formulation tank II 26 are equipped with agitator, and described cooling tower 23 is for being provided with the cooling tower of induced draft fan.By a step liquid transferpump 28, a step liquid pump is entered in modified pond 21, under agitation condition, progressively drop into the reaction of formula ratio calcium aluminate, after having reacted, material is interior after air cooling at cooling tower 23, enter separate tank 24 and add flocculation agent to carry out flocculation separation, after quiescent settling, supernatant liquor is put into work in-process pond 27; Flocculation separation slag pumps into reaction tank 11 from separating slag saving pond 25, when slag in question response pond 11 reaches process stipulation disposal amount, add formula ratio hydrochloric acid, sulfuric acid and water reaction, after slag has reacted, material enters reaction tank transfer pond 12 by aforementioned technical process and carries out flocculation separation.
Fig. 3 is the structural representation of roller drying system, as shown in the figure, roller drying system comprises dry liquid high level tank 31, drying drum 32 and finished belt transfer roller 33, described work in-process pond 27 is communicated with dry liquid high level tank 31 by work in-process liquid pump 34, dry liquid high level tank 31 is communicated with the dry liquid entrance of drying drum 32, and the solid outlet of drying drum 32 is just to finished belt transfer roller 33; The quantity of described drying drum 32 is 20 and parallel with one another, and described drying drum 32 is provided with high-altitude vapor discharge channel 35, and the quantity of described work in-process liquid pump 34 is two and parallel with one another.In work in-process pond 27, work in-process liquid is by the dry liquid high level tank 31 of work in-process liquid pump 34 suction, carry out high temperature dehydration by dry liquid high level tank 31 distribution feed liquids to each drying drum 32 and be dried, carried by finished belt transfer roller 33 through the solid poly aluminium chloride of roller drying.
Fig. 4 is the structural representation of slag treatment system, as shown in the figure, slag treatment system comprises slag wash trough 41, slag pressure filter 42, slag dryer 43 and wastewater disposal basin 44, the filter-press residues outlet of described main pressure filter 14 is communicated with slag wash trough 41, described slag wash trough 41 is communicated with the entrance of slag pressure filter 42 by washed-residue transferpump 45, the filter-press residues outlet of slag pressure filter 42 is communicated with slag dryer 43, the liquid exit of slag pressure filter 42 is communicated with wastewater disposal basin 44, and wastewater disposal basin 44 is communicated with reaction tank 11 and modified pond 21 respectively by waste water pump 46; The filter-press residues outlet of described main pressure filter 14 is communicated with slag wash trough 41 by rotary conveyor, the filter-press residues outlet of described slag pressure filter 42 is communicated with slag dryer 43 by rotary conveyor, described slag wash trough 41 is provided with agitator, the quantity of described slag pressure filter 42 is two and parallel with one another, and described wastewater disposal basin 44 is communicated with tap water pipe network.After main pressure filter 14 press filtrations, filter-press residues enters slag wash trough 41, adopt fresh water to wash to press filtration again after neutrality, finally enter slag dryer 43 and take out after by waste heat boiler steam drying, slag washes and tail gas absorb waste water and integrate with and send into reaction tank 11 after wastewater disposal basin 44 and modified pond 21 is applied mechanically.
Fig. 5 is the structural representation of tail gas absorbing system, as shown in the figure, tail gas absorbing system comprises tail gas absorber 51 and is arranged on the gas skirt of main pressure filter 14 tops, the exhaust gas entrance of described tail gas absorber 51 is communicated with the exhaust steam passage at reaction tank 11, reaction tank transfer pond 12, modified pond 21 and gas skirt top respectively, the absorption liquid entrance of described tail gas absorber 51 is communicated with tap water pipe network, and the absorption liquid outlet of tail gas absorber 51 is communicated with wastewater disposal basin 44.What in production process, produce is collected into tail gas absorber 51 and absorbs containing sour waste gas unification, absorbs waste water and slag washes and integrates with and send into reaction tank 11 after wastewater disposal basin 44 and modified pond 21 is applied mechanically.
Finally explanation is, above preferred embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is described in detail by above preferred embodiment, but those skilled in the art are to be understood that, can make various changes to it in the form and details, and not depart from the utility model claims limited range.
Claims (5)
1. a solid poly aluminium chloride reaction unit for environment-protecting clean, is characterized in that: comprise single step reaction system, two step reactive systems, roller drying system, slag treatment system and tail gas absorbing system;
Described single step reaction system comprises reaction tank, reaction tank transfer pond, flocculating agent formulation tank I, main pressure filter and a step liquid pool, described reaction tank is provided with bauxitic clay charging opening and acid solution charging opening, reaction tank is communicated with reaction tank transfer pond, flocculating agent formulation tank I is communicated with reaction tank transfer pond, reaction tank transfer pond is communicated with the entrance of main pressure filter by the muddy material pump of a step liquid, and the liquid exit of main pressure filter is communicated with a step liquid pool;
Described two step reactive systems comprise modified pond, modified Chi Zhongzhuanchi, cooling tower, separate tank, separate slag saving pond, flocculating agent formulation tank II and work in-process pond, a described step liquid pool is communicated with modified pond by a step liquid transferpump, described modified pond is provided with calcium aluminate charging opening, modified pond is communicated with modified Chi Zhongzhuanchi, modified Chi Zhongzhuanchi is communicated with the entrance of cooling tower by modified liquid transferpump, the outlet of cooling tower is communicated with separate tank, flocculating agent formulation tank II is communicated with separate tank, the top of separate tank is communicated with work in-process pond, the bottom of separate tank with separate slag saving pond be communicated with, separating slag saving pond is communicated with reaction tank by separating slag transferpump,
Described roller drying system comprises dry liquid high level tank, drying drum and finished belt transfer roller, described work in-process pond is communicated with dry liquid high level tank by work in-process liquid pump, dry liquid high level tank is communicated with the dry liquid entrance of drying drum, and the solid outlet of drying drum is just to finished belt transfer roller;
Described slag treatment system comprises slag wash trough, slag pressure filter, slag dryer and wastewater disposal basin, the filter-press residues outlet of described main pressure filter is communicated with slag wash trough, described slag wash trough is communicated with the entrance of slag pressure filter by washed-residue transferpump, the filter-press residues outlet of slag pressure filter is communicated with slag dryer, the liquid exit of slag pressure filter is communicated with wastewater disposal basin, and wastewater disposal basin is communicated with reaction tank and modified pond respectively by waste water pump;
Described tail gas absorbing system comprises tail gas absorber and is arranged on the gas skirt of main pressure filter top, the exhaust gas entrance of described tail gas absorber is communicated with the exhaust steam passage at reaction tank, reaction tank transfer pond, modified pond and gas skirt top respectively, the absorption liquid entrance of described tail gas absorber is communicated with tap water pipe network, and the absorption liquid outlet of tail gas absorber is communicated with wastewater disposal basin.
2. the solid poly aluminium chloride reaction unit of environment-protecting clean according to claim 1, it is characterized in that: described reaction tank, reaction tank transfer pond and flocculating agent formulation tank I are equipped with agitator, the quantity of the muddy material pump of a described step liquid is two and parallel with one another, the quantity of described main pressure filter is three and parallel with one another, and the quantity of a described step liquid pool is four and parallel with one another.
3. the solid poly aluminium chloride reaction unit of environment-protecting clean according to claim 1, is characterized in that: described modified pond, separate tank, separation slag saving pond and flocculating agent formulation tank II are equipped with agitator, and described cooling tower is the cooling tower that is provided with induced draft fan.
4. the solid poly aluminium chloride reaction unit of environment-protecting clean according to claim 1, it is characterized in that: the quantity of described drying drum is 20 and parallel with one another, described drying drum is provided with high-altitude vapor discharge channel, and the quantity of described work in-process liquid pump is two and parallel with one another.
5. the solid poly aluminium chloride reaction unit of environment-protecting clean according to claim 1, it is characterized in that: the filter-press residues outlet of described main pressure filter is communicated with slag wash trough by rotary conveyor, the filter-press residues outlet of described slag pressure filter is communicated with slag dryer by rotary conveyor, described slag wash trough is provided with agitator, the quantity of described slag pressure filter is two and parallel with one another, and described wastewater disposal basin is communicated with tap water pipe network.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320887015.5U CN203741063U (en) | 2013-12-31 | 2013-12-31 | Environment-friendly and clean solid polyaluminum chloride reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320887015.5U CN203741063U (en) | 2013-12-31 | 2013-12-31 | Environment-friendly and clean solid polyaluminum chloride reactor |
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| CN203741063U true CN203741063U (en) | 2014-07-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104743590A (en) * | 2013-12-31 | 2015-07-01 | 重庆蓝洁广顺净水材料有限公司 | Environment-friendly clean solid polyaluminium chloride reaction device |
-
2013
- 2013-12-31 CN CN201320887015.5U patent/CN203741063U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104743590A (en) * | 2013-12-31 | 2015-07-01 | 重庆蓝洁广顺净水材料有限公司 | Environment-friendly clean solid polyaluminium chloride reaction device |
| CN104743590B (en) * | 2013-12-31 | 2017-10-31 | 重庆蓝洁广顺净水材料有限公司 | The solid polyaluminium chloride reaction unit of environment-protecting clean |
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Granted publication date: 20140730 Effective date of abandoning: 20171031 |