Solid-liquid enrichment separation method for tobacco sheet wastewater in paper-making method
A technology of tobacco sheet and separation method, which is applied in the directions of tobacco, tobacco preparation, tobacco treatment, etc., to achieve the effect of strong pertinence, easy implementation, and reduction of subsequent biochemical treatment load
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Example 1:
Solid-liquid enrichment and separation of the comprehensive waste water of Hubei Xinye Tobacco Flake Development Co., Ltd. papermaking method tobacco flakes. The wastewater was provided by Wuhan Green Environmental Facility Operation Co., Ltd., and was grade A flake production wastewater. PFS in the Fe system, PAC in the Al system, PAFS in the Al-Fe composite system, diatomaceous earth, bentonite, activated carbon and other flocculants or adsorbents, respectively, and the Ca-Mg system composite flocculant prepared by the present invention Carry out parallel contrast solid-liquid enrichment and separation treatment to evaluate the separation effect.
The prepared Ca-Mg series complex coagulant is a stable mixed coagulant powder, which can be made from commercially available CaSO 4 ·2H 2 O, Mg(OH) 2 , Ca(OH) 2 Made of raw materials. The powder can be first according to the chemical formula CaSO 4 ·2H 2 O: Mg(OH) 2 : Ca(OH) 2 =(0.8-1.1):(1.5-2.5):(8-12) molar ratio for ...
Example Embodiment
Example 2:
The treated wastewater was taken from the same manufacturer as in Example 1, and was grade B flake production wastewater. The soluble salts of Fe, Ca, Mg, Al, Zn and other metals were compared with the Ca-Mg series compound coacervation prepared by the present invention. The solid-liquid enrichment and separation effect of the agent. The dosage of Example 2 is subject to the dosage of the Ca-Mg-based complex coagulant prepared by the present invention with other agents. The remaining implementation conditions and measured technical indicators are exactly the same as those of Example 1, specifically:
The Ca-Mg mixed coagulant is a stable mixed coagulant powder, which can be made from commercially available CaSO 4 ·2H 2 O, Mg(OH) 2 , Ca(OH) 2 Made of raw materials. The powder can be first according to the chemical formula CaSO 4 ·2H 2 O: Mg(OH) 2 : Ca(OH) 2 = (0.8-1.1): (0.8-1.1): (8-12) molar ratio for metering and batching, the preferred value of the molar ratio is ...
Example Embodiment
Example 3:
The waste water used was still taken from the same manufacturer as in Example 1. It was the comprehensive waste water produced by flakes (ie comprehensive flake waste water). Several solid adsorbents were compared, such as kaolin, clay, activated clay, 4A zeolite, terracotta powder, and hydroxide. The solid-liquid enrichment and separation effect of magnesium, aluminum hydroxide, etc., and the Ca-Mg-based composite flocculant prepared by the present invention. The dosage of this example 3 is added according to the principle of adsorption, so that the Ca-Mg series composite flocculant prepared by the present invention is subject to the higher dosage of solid adsorbent and longer adsorption reaction time. The rest of the implementation conditions and the measured The technical indicators are exactly the same as in Example 1.
The Ca-Mg series mixed coagulant is a stable mixed coagulant powder, which can be made from commercially available CaSO 4 ·2H 2 O, Mg(OH) 2 , Ca(...
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