Coal gasification reclaimed water treatment pretreatment system
A technology of coal gasification and pretreatment, which is applied in the fields of neutralizing water/sewage treatment, water/sewage treatment, water/sewage treatment equipment, etc., can solve the problem of high colloidal silicon content, reduce production cost, reduce impact, and reduce colloidal silicon content. The effect of silicon
Pending Publication Date: 2018-08-03
YANGMEI GRP TAIYUAN CHEM NEW MATERIAL
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Problems solved by technology
[0003] In order to effectively solve the problem of high colloidal silicon content in the feed water of the coal gasification water reuse device in the existing coal chemical wastewater treatment system, the present invention provides a coal gasification water treatment pretreatment system
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specific Embodiment approach
[0039] As a specific embodiment of the present invention, the sludge outlet at the bottom of the coal gasification high-density tank 11 is communicated with the sludge tank 20 through a sludge discharge pipe. The sludge discharge from the coal gasification high-density pool 11 is realized.
[0040] Preferably, at least two pump bodies are connected in parallel on the discharge line of each dosing unit. One of the pump bodies is used as a normal pump body, and the other is used as a spare pump body.
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The invention relates to the field of coal gasification reclaimed water treatment, in particular to a coal gasification reclaimed water treatment pretreatment system. The system comprises a magnesiumagent chemical dosing unit, a flocculating agent dosing unit, a caustic soda dosing unit and a sodium carbonate dosing unit, wherein discharging pipelines of the magnesium agent dosing unit, the caustic soda dosing unit and the sodium carbonate dosing unit are respectively connected to a first dosing fast coagulation pool; the discharging pipeline of the sodium carbonate dosing unit is positionedin the left upper corner of the first dosing fast coagulation pool in a clockwise stirring direction of the first dosing fast coagulation pool; the discharging pipeline of the magnesium agent dosingunit is positioned at the right upper corner of the first dosing fast coagulation pool; the discharging pipeline of the caustic soda chemical dosing unit is positioned at the left lower corner of thefirst dosing fast coagulation pool. The coal gasification reclaimed water treatment pretreatment system has the advantages that colloidal silica in water can be effectively reduced; the influence on the active microbes in the biochemical treatment section is reduced; in addition, the content of silicon ions in the outlet water can be obviously reduced; the consumption on an ultrafiltration membrane and a reverse osmosis membrane in the reclaimed water treatment device is reduced.
Description
technical field [0001] The invention relates to the field of water treatment in coal gasification, in particular to a pretreatment system for water treatment in coal gasification. Background technique [0002] Colloidal silica (SiO 3 2- ) content is high (exceeding the standard), which will have a great impact on the reverse osmosis membrane element. In order to solve this problem reasonably and cooperate with the existing pretreatment process, a new dosing system (magnesium chloride system) was added to the dosing part of the high-density coal gasification tank to reasonably remove the existing colloidal silicon (SiO2). 3 2- ), so as to meet the water quality requirements of the membrane system and increase the service life of ultrafiltration and reverse osmosis membranes. SUMMARY OF THE INVENTION [0003] In order to effectively solve the problem of high colloidal silicon content in the influent of the coal gasification reclaimed water reuse device in the existing co...
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IPC IPC(8): C02F9/04C02F101/10
CPCC02F9/00C02F1/001C02F1/5236C02F1/66C02F2201/002C02F2101/10
Inventor 张建勇王宏斌陈文胜王耀斌张海全荆晓明朱耀斌
Owner YANGMEI GRP TAIYUAN CHEM NEW MATERIAL