**Author details**

*Recent Advancements in the Metallurgical Engineering and Electrodeposition*

terms of diluted effluent neutralization.

elements in the flue. In most cases, the courses include.

• One or more stages of detoxification.

• A phase in dissolution-precipitation.

also at least two presidents to keep the operation continues.

• A flocculation phase alternating.

raw material and insolubilized in the reactor.

**7. Conclusion**

in the case of Cu2+.

the metallic pollution.

3. Neutralization, this phase is on the middle that is, the characterization studies have shown that most of the pH is close to 5.99 with an average 6.01 except a few exceptional cases. From then this step will be in most of the day exceeded even in the case of the neutralization of dilute effluents at the exit of treatment, discharge will be clarified concentrated alkaline after treatment and then joined the others in

4. Specific Treatment: The treatment methods are defined in terms of chemical

But all these steps, we offer the reactors filled with raw chitin from shrimp processing is done in series with at least two reactors. Power through the discharge is from the bottom up to ensure the best conditions of contact. Similarly we must always place two reactors relief and it is also a book containing alternating chain

5-Treatment of sludge generated once the carrier material is saturated, the sludge is then pumped out regardless of the waters. This sludge can be regenerated by an acid or recycled in building materials [32], such transactions may take place after dehydration on a filter press which the design is based on the mass flows of

In conclusion, and since the coast of Casablanca city is subjected to numerous anthropologic attacks, In front of such a situation, it is indispensable that every industrial unity must be equipped with a wastewater system treatment, to protect the environment and its resources. The treatment of the global discharge shows that there is competitive adsorption between metals. The nickel has more affinity toward crab raw chitin. The waste water treatment by raw chitin from shrimp entrains a decrease of heavy metals contents in the global rejection. The efficiencies on elimination are important and excess 99% for some metals. The use of the raw chitin shows itself of big potential for the treatment of the liquid discharges of the studied unity MAFER. It showed itself capable of treating heavy metals loads superior to 200 mg/l by presenting percentage removal between 90% and 97%, as

The physic-chemical characterization shows that the currents rinses are greatly loaded with heavy metals far exceed the proposed limit values Morocco PVL. The adsorption test of heavy metals on raw chitin showed interesting results for the current rinses. Besides the rejection colored before adsorption (case of Ni, Cu, and Cr) becomes colorless after treatment with raw chitin. The study of the rinses currents treatment by raw chitin, we allowed the description of a treatment facility based on chitin. Consequently the adsorbing support raw chitin must be added in the treatment stations of the effluent of the units of surface treatment to eliminate

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Boukhlifi Fatima Materials and Applied Catalysis Equip (MCA), Laboratory of Chemistry and Biology Applied to the Environment, Faculty of Science, My Ismail University, Meknes, Morocco

\*Address all correspondence to: boukhlifi1@yahoo.fr

© 2020 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
