Recycle system for chemical water treatment wastewater and furnace ash rushing water
A technology for recycling slag water and treating wastewater, which is applied in the field of water treatment and can solve the problems of rapid salinization of surrounding soil, low return on investment, and excessive suspended solids.
Inactive Publication Date: 2012-12-19
KUNMING CELLULOSE FIBERS CO LTD
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Problems solved by technology
Conventional treatment methods for flushing ash and slag water include: 1. Add coagulants and coagulants to cooperate with sewage purifiers to deal with sedimentation and discharge, which will not only seriously exceed the standard of suspended solids in the receiving water body, but also cause rapid salinization of the surrounding soil 2. Due to the dissolution of some chemical components in the ash and slag, the content of suspended solids, pH value and fluorine, arsenic, and heavy metal content in some ash slag (pool) drainage exceed the national discharge standards; 3. Dry treatment Although it is beneficial to the comprehensive utilization of fly ash and to prevent the pollution of the discharged ash water and the possible corrosion and scaling problems caused by recycling and reusing the ash water, the return on investment is low and there are secondary pollution problems of toxic substances such as heavy metals and arsenic limited promotion
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[0014] Such as figure 1 As shown, the chemical water treatment waste water and boiler flushing slag water recycling system of the present invention are composed of a neutralization tank 3, ash flushing water settling tank 8, boiler flushing ash water system 10, ash flushing water circulation pump 7, waste liquid pump 13. Composed of overflow pump 5 for flushing ash and slag water, check valve 6 and pipelines, neutralization tank 3 and overflow pipe for ash and slag flushing water 4, sodium bed regeneration liquid pipe 2, desalination system regeneration liquid pipe 1, waste liquid The pump 13 is connected, the ash and slag water overflow pipe 4 is connected with the ash and slag water settlement tank 8, and the ash and slag water overflow pump 5 is arranged between the ash and slag water overflow pipe 4 and the ash and slag water settlement tank 8, The ash and slag water settling tank 8 is connected to the boiler ash and slag water system 10 through the ash and slag water circ...
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The invention discloses a recycle system for chemical water treatment wastewater and furnace ash rushing water, consisting of a neutralization pond, an ash rushing water sedimentation pond, a furnace ash rushing water system, an ash rushing water circulating pump, a waste liquid pump, an ash rushing water overflow pump, a check valve and a pipeline. The wastewater of the chemical water neutralization pond, the regenerated liquid of a sodium bed and the ash rushing wastewater are recovered to be guided into the chemical water neutralization pond to be treated in a neutralization reaction way to reach the compliant range of the pH value, and are all pumped back to the furnace ash rushing water system to be recycled. Meanwhile, the wastewater with worse quality is taken away by slag, so that a closed type recycle wastewater comprehensive utilization system can be formed, and the water replenishing quantity of the furnace ash rushing water system and the discharge quantity of the wastewater can be reduced. The recycle system reaches or realizes the zero release requirements of the chemical water treatment wastewater and the furnace ash rushing wastewater.
Description
technical field [0001] The invention relates to the technical field of water treatment, in particular to a recycling system for chemical water treatment waste water and boiler ash slag water. Background technique [0002] The production process of conventional chemical water treatment process will produce waste water, and chemical water treatment waste water has two parts: regular waste water and non-recurring waste water. If the resin is regenerated, the regenerant used is the waste water produced by acid and alkali regeneration; in order to avoid environmental pollution, the acid-base waste water is treated to a pH value of 6 to 9 by using neutralization treatment in the chemical water neutralization pool. Carry out external discharge (standard discharge). The waste water produced by the boiler flushing ash and slag water system is directly discharged in violation of the regulations because the pH value is as high as 10 or more. Because the types and contents of pollutan...
Claims
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IPC IPC(8): C02F9/04
Inventor 秦伦斌王速跃
Owner KUNMING CELLULOSE FIBERS CO LTD