Sludge treatment heat exchange system
A technology of heat exchange system and sludge treatment, which is applied in the direction of biological sludge treatment, water/sludge/sewage treatment, special treatment targets, etc., to achieve the effect of reducing compaction, reducing water cost, and reducing water consumption for soft water
Pending Publication Date: 2017-05-31
BEIJING GENERAL MUNICIPAL ENG DESIGN & RES INST
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Problems solved by technology
[0003] The purpose of the present invention is to provide a heat exchange system for sludge treatment to solve the problem of upgrading the thermal system in the sludge area in the reconstruction of the sludge treatment system in the existing sewage treatment plant, and to realize the low-cost transformation mode and the maximum utilization of the original equipment. Stable operation and other technical issues
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[0019] Concrete composition and working principle of the present invention refer to figure 1 shown. A heat exchange system for sludge treatment, including a primary heat exchanger, a secondary heat exchanger, a cooling water heat exchanger, a cooling water pool and a waste water pool; the inlet of the primary heat exchanger is the input end of the thermally hydrolyzed sludge, At the outlet of the primary heat exchanger, the sludge whose temperature drop after passing through the heat exchanger of this stage is 65%-75% of the difference between the temperature of the sludge after thermal hydrolysis treatment and the set temperature of the anaerobic digestion process is sent to the secondary connected to it. The inlet of the secondary heat exchanger; the outlet of the secondary heat exchanger sends the sludge whose temperature drops to the set temperature for the anaerobic digestion process after passing through the heat exchanger of this stage to the digester connected to it; t...
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The invention discloses a sludge treatment heat exchange system, which comprises a primary heat exchanger, a secondary heat exchanger, a cooling water heat exchanger, a cooling water pool and a waste water pool; an inlet of the primary heat exchanger is a pyrohydrolyzed sludge input end, and sludge flowing through the primary heat exchanger is delivered into an inlet of the secondary heat exchanger, connected with an outlet of the primary heat exchanger, through the outlet of the primary heat exchanger; through an outlet of the secondary heat exchanger, sludge, the temperature of which is cooled to the set temperature of the anaerobic digestion technology after flowing through the secondary heat exchanger, is delivered to a digestion pool connected with the outlet of the secondary heat exchanger; cooling water of the primary heat exchanger is soft water and can be recycled after flowing through the cooling water heat exchanger; a cooling water inlet end of the secondary heat exchanger is connected with the cooling water pool, a cooling water outlet is connected with the waste water pool; and the waste water pool is connected with a secondary settling pool. According to the sludge treatment heat exchange system, the technical problem that a mud-field heat system during transformation of a sludge treatment system of the existing sewage treatment plant is compatible after being upgraded is solved, so as to realize the maximum utilization of a low-cost transformation mode and stable running of the original equipment, and the like.
Description
technical field [0001] The invention relates to a sewage treatment technology. Background technique [0002] Since thermal hydrolysis is a complete set of equipment, the relevant technical parameters are provided by the equipment manufacturer, but how to match it with the existing thermal system of the water plant is still being explored. Although some scholars have pointed out that sludge can adopt two-stage heat exchange method, they have not proposed a specific method for precise control of the temperature of the digester, nor have they proposed the combination and utilization of the two-stage heat exchange facilities and the heat exchange equipment in the original factory area. , did not explain the source and whereabouts of the cooling water used for heat exchange, which belonged to partial design, and did not carry out the layout and upgrade of the thermal system as a whole. The thermal system in the thermal hydrolysis-anaerobic digestion process is mainly the heat su...
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IPC IPC(8): C02F11/04
CPCC02F11/04C02F2303/10
Inventor 杜强强戴明华张晏黄鸥陈怡王平
Owner BEIJING GENERAL MUNICIPAL ENG DESIGN & RES INST